Finding the Fourth Proportional to 12,186.01, 18,259.89 and 9,419.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,186.01 : 18,259.89 = 9,419.47 : x
2. Step 2: Convert to fraction form
   12,186.01/18,259.89 = 9,419.47/x
3. Step 3: Cross multiply
   12,186.01x = 18,259.89 × 9,419.47
4. Step 4: Simplify right side
   12,186.01x = 171,998,486.06
5. Step 5: Solve for x
   x = 171,998,486.06/12,186.01
6. Step 6: Final answer
   x = 14,114.42